Laser 4191 Kit shore and drift motorcycle chain. Laser 4191 Kit shore and drift a motorcycle chain rivet to be broken upon the first use on a string of motorcycle large cube, c is extremely disappointing for a first purchase on e once the logic of the tool is understood, it is useful to change once a year his chain, for me, a Africa-twin 750. Not every week because it is still difficult for your phalanges.